Equipment catalog

…pists) could adapt from that device: input stage with cheap programmable gain OpApm ( MCP6S21 ). Other opamp (any Rail-to-Rail) in that schematics is for moving displayed graphic up/down. Well, …

…e Smile ) – vols/div (modified to show “50mV”…”100mV”…”1V”etc only zoom factors. The MCP6s22 will come latter so will have to make some adjustments…) Still to do: – dual channel (on the way) (…

…E on PB& Crying or Very Sad Crying or Very Sad Crying or Very Sad I think I take the MCP6S22 for amplifying (similar DP-Scope V1.3) I modified the menu for service with the second encoder, on …

…om AD and STM last year. That is why I was wondering about AD substitute. In case of MCP6S61 it is not a tragedy anyway, it costs under 2 euros on local official chain here, already got one fo…

…. But if you have one to test it’s great. MCP6S61 doesn’t seem to exist Smile Either MCP6S91 or MCP6S21 Smile ThunderOwl Thu Feb 09, 2017 11:05 am Sorry, of course “21”. Still demons around, I…

…0 or MAX??? to generate the -5V, so I can spare VGEN-Pin . But perhaps also with the MCP6S91 / 92. I have to test it separate with the SPI, if I can change the clock-divider temporarily for the…

… Updates are on the way! Smile Also I’ve found a simple solution for the analog bit: MCP6S92 (Single-Ended, Rail-to-Rail I/O, Low-Gain PGA) More exactly 4 of them, 2 for each channel and also …

…It would be great to replace the manual gain switches (and gain pins) with menus and MCP6S92 ’s Smile Might have a go on this Smile P.S. BTW is there a video with this setup/code? Smile how man…

…3 regulator. – On board Li-Po battery charger with automatic power supply selection. MCP73812 charger is used, adjusted at 70mA charging current. – Separate 3V3 regulators (MCP1700) for digital…

…like me to get some for you. The prices for the AP2114HA-3.3TRG1, LQW2BASR47J00L and MCP73812T -420I/OT seemed better there and the shipping can be covered by another order I am placing. Only the…

…ated circuits: U1 LM393 (K, L-line conversion) U2 TJA1050 (HS-CAN transceiver 5V) U3 MP1482DS (step-down 2A, sync rectified) U4 LM6206N3 (linear voltage stabilizer 1,5-3,3V 0,25A ozn 662k) U5? …

…s I can get proper response however the sound is not that pure as using VCO build on NE555 . Probably I need averaging “ain”. stevestrong Thu Sep 06, 2018 3:20 pm The reversal function is not…

Spark Logic archive [SOLVED] PT8211 to PAM8403 amplifier connection victor_pv Tue Mar 20, 2018 4:13 pm UPDATE: The solution in this post works fin…

…tm32f030 … Wemos controller type although I darn the possibility to use TLC5490 or a PCA9685 type hat …. RogerClark Fri Aug 25, 2017 8:02 am It looks like BUFFER_LENGTH is defined in Wire.h fo…

… me that with STM32’s Wire library I can communicate with other i2c devices (I tried PCF8574 and DS1621) without any problem. Reading the datasheet of MPR121 I found that there is a special co…

…se even have integrated pull-up resistors which the shift registers don’t have. E.g. PCF8575 is available an AliExpress as a breakout board. Or SX1509 which even can do the matrix scanning for…

Archived excerpt Dual LFO with choice of waveforms using PT8211 and Blue Pill KenLaszlo Fri Nov 24, 2017 2:12 pm Hi folks Roger encouraged me to make a post here, …

…cing frequency display) Laughing mausi_mick Thu Apr 06, 2017 1:17 pm sorry, Ihave no PT8211 ? now I have modified the touch-input for DDS AD9851 to wobble the frequency between start-frequenc…

Spark Logic archive [SOLVED] PT8211 to PAM8403 amplifier connection victor_pv Tue Mar 20, 2018 4:13 pm UPDATE: The solution in this pos…

…llie Thu Jul 27, 2017 10:04 pm The text on U4 chip is DE=A1D, which is also known as RT9193 . In my applications, I use an external voltage regulator for all external sensors and actuators. Th…

…egisters don’t have. E.g. PCF8575 is available an AliExpress as a breakout board. Or SX1509 which even can do the matrix scanning for you. Special-purpose keypad controllers with more than 16…

…i_mick Tue Nov 07, 2017 7:02 pm now the second preamp is nearly ready, I changed the TL072 in the first stage with the MCP6022 (R.R) because supply-voltage is only 5V. The noise is from not …

…mp for this (like TL07x, LM32x…) For stereo twice the circuit and use a dual OP-amp ( TL072 …). Edit: Ok, this is – more or less – done with the application circuit (with LP-filters) so you ha…

… the preamp for -5V, 0V and +5V. On the left is a input-stage similar DSO150 with an TLC072 and on the right a MCP6S91 and an amplifier / levelshifter from -5V …+5V to 0V…+3.3V ThunderOwl Sun…

…use the same approach as Fysetc F6 – so that the board could support A4988, DRV8825, TMC2100 /2130/2208 – and 2130 in SPI mode and 2208 in UART mode – just by using jumpers, and no cable mess. …

…lors filaments simultaneously) on just a blue pill or maple mini Laughing Why not on TMC2130 stepper driver that runs also on SPI? There is already a fork of Marlin that was adapted for TMC213…

…ermistors [*]Endstops [*]PWM for heaters / fans / buzzer [*]Stepper drivers via SPI ( TMC2660 ) [*]20×4 Character LCD (RRD Smart Controller) [*]Serial over USB [*]EEPROM emulated in flash The cu…

… It seems that the TMC2130 still needs step/dir pins even with using SPI though. The TMC5130 or the L6470 seem more advanced in that they can be just sent a target position via SPI and they wi…

…:27 pm The 2N7000 is proven technology for level shifting. Any comments about the TI TXS0108E . It is not too expensive – lot of 5 costs $3.70. With 8 channels per chip, it is $3.70/40 per chann…

…l 26, 2016 6:51 pm the 5V motor is running off a 6v adapter, thats running through a ULN2003APC … Its a hacked together car based multi adapter thats running off a spare 12v one :p Im currently sh…

…k a look at it? Back to the controller : I swapped out the additional board to use a uln2803 npn transistor array. a really beast for its size (and price). thought that would be pretty neat (a…

…global instantiation RogerClark Fri Jun 05, 2015 11:39 am Guys, I was looking at the VS1003 lib and thought it would be good to try to playback and MP3 from the SD card, but rather than runni…

…is may be a good option for many, as those boards can be had for the same price as a VS1003 or less, and instead of 2 boards you use only one and a little amplifier. juliusbangert Mon Aug 14,…

…enough to be used. It opens and reads a file from SD and plays it as an MP3 though a VS1003 I will repost the code to the VS1003 lib thread in case anyone with the same hardware wants to have…

… for those who want to join the party. RogerClark Fri Jun 05, 2015 8:56 am Well, The VS1003 lib works playing MP3 for me I just need to find an Oink.mp3 ahull Fri Jun 05, 2015 9:10 am RogerCl…

…VS1003_STM ported library Vassilis Fri May 22, 2015 1:04 pm Hi, I ported the Arduino VS1003B library with the “hello” example to the STM32F103 MCU. I published the library to Github .. The ful…

…:22 am I really don’t think its worth the effort, even if it was just about possible VS1053 boards are less than $10, and we have a lib for them (thanks to vasillis) $10 … 4853e421c4 Offloadi…

…inly ok, but i do occasionally get a glitch when trying to play MP3 files from SD to VS1053 . But i have not had time to find the cause, because sometimes it can run for many hours without a p…

…812 amplifier … X9813L.pdf. The circuit is pretty much the reference circuit (plus a XC6206 LDO to power the MAX9812 with 3.3V). Please note that the MAX9812 is a fixed gain amplifier, which …

…on) U2 TJA1050 (HS-CAN transceiver 5V) U3 MP1482DS (step-down 2A, sync rectified) U4 LM6206N3 (linear voltage stabilizer 1,5-3,3V 0,25A ozn 662k) U5? U6 GD32F103RBT6 ARM Cortex-M3 3.3V 36-45mA …

Spark Logic archive STM32 M0 board with BLE $25 stevech Tue Mar 08, 2016 6:48 pm … 4d7f5b322f RogerClark Tue Mar 08, 2016 9:24 pm Small but expe…

Spark Logic archive STM32F103ZET6 support Pito Wed Nov 23, 2016 9:30 pm Hi, let me ask the forum – is this ZET6 board … SwiCRUctZm somehow supported today? I’…

Spark Logic archive Value Line Discovery Board Phisatho Fri Oct 28, 2016 2:22 pm Where can I get the support files for STM32VLDISCOVERY board? … overy.html This board …

Spark Logic archive very small STM32F405 board ChrisMicro Sat Jul 22, 2017 3:07 pm I found this STM32F407 flight controller board which is quite nice. I think it could b…

…ill clock frequency adjustment В индексированной копии видна ветка от июля 2018 года. RogerClark измерил на Blue Pill частоту 8,000600 МГц вместо 8 МГц. Обсуждались нагрузочные конденса…

Spark Logic archive "bit bang" SPI pins STM32F1 alexandros Mon Oct 09, 2017 10:09 am Hello , i have a project that i use…

Spark Logic archive Board loses program after boot mortenholm Fri Jul 24, 2015 11:23 am Hi I successfully uploaded a sketch to my board setting boot0 high and it works, but …

Archived excerpt Choose a development board aster Wed Apr 12, 2017 2:53 pm Hello, i thought to write here instead of the board section since i didn t choose witc…

Spark Logic archive DOA boards BennehBoy Mon Jan 23, 2017 11:18 am Are DOA boards just par for the course? 3x maple mini clones arrived from China today…

Spark Logic archive Does "Baite" still make Maple Minis RogerClark Fri Jun 02, 2017 10:40 pm The “Baite online store” on Alie…

Spark Logic archive EEPROM emulator how to use on Maple Mini ? z1rqdym Thu Sep 17, 2015 2:50 pm I want to use EEPROM emulation on Maple mini (baite clone). I fin…

Spark Logic archive examples linked to board type. since when? zmemw16 Wed Aug 03, 2016 5:06 pm ok, when did the Arduino_STM32 Examples menu entry get…

Archived excerpt F4 hardware driver – can’t make hardware talk to pins! palmerr Fri Mar 31, 2017 7:34 am I’m working up an F4 Board (Bla…

Archived excerpt Found another STM32 Arduino Core zoomx Sun May 03, 2015 3:56 pm I found on GitHub another STM32 Arduino core. It is only for STM32F103, focused on a s…

Spark Logic archive i2cscanner single device, multiple device addresses zmemw16 Tue Aug 18, 2015 9:08 pm i’m trying to talk to the i2c at24c08 bu…

Archived excerpt IMO: time to freeze the F103 core codebase mrburnette Thu Jun 30, 2016 12:37 pm I had a hissy in another…

Spark Logic archive Including binary libraries – experiment in teaching gbulmer Mon Apr 03, 2017 1:28 pm I’m thinking about doing an experiment in …

Spark Logic archive issue with sd card aster Tue Jul 25, 2017 8:12 pm hello i have this SD module, sdfat version 1.0.3, external ttl-serial, low (4mhz) spee…

Archived excerpt LibMaple Core reboot process RogerClark Thu May 10, 2018 10:35 am Guys I’ve pushed an update which removed the robotis bootloader code from the core, (…

Spark Logic archive Loading .bin without using Arduino IDE MakcYan Fri Nov 24, 2017 4:10 pm Hello! Tell me how can I load the co…