I designed this so that I could adapt the ramps pololu sockets to send signals to my cheap Chinese TB6600 drivers I have on the way.

Made with Fritzing.

Potentiometer board

Z80 8-bit Universal IDE (v.0.99a)

LightSaber shield for Teensy 3.2. For more information: http://fredrik.hubbe.net/lightsaber/

First 20mm LDO - Based on 17mm design but with a few added features

solo acc board

HARDWARE

Credit goes to MCfuturegame .. for the Arduino Pro Mini model used in the above rendering.

Required components:

• Arduino Pro Mini 328P/16MHz/5V (with standard Arduino pinout for A4/A5 ports)
• resistors in 0805 package: 6 * 10k, 1 * 390ohm, 1 * 510ohm, 1 * 680ohm, 1 * 910ohm, 1 * 1.5k, 1 * 3.3k (and optionally 1 * 4.7k for protecting the 3.3V S.Port line from 5.0V Arduino serial - cut the jumper between solder pads if you install this resistor)
• 1 * 1x9 straight 2.54mm header pins (divided into 1, 1, 2, 5 sections)
• 1 * 1x14 right angle 2.54mm header pins (divided into 3, 4, 7)

NOTE 1: the 4 pin SERIAL connection is optional and used for uploading the code only - you don’t have to solder it in permanently. Make sure you always connect it TO THE SHIELD, not to the Arduino board itself! When uploading the code the Arduino board needs to be reset manually using the reset button.

NOTE 2: make sure you order the right angle pin headers that install flat on the board (see the picture below).

SOFTWARE

Load the code below (requires FrSky S-Port Telemetry and standard SoftwareSerial libraries)

/*
  DIY Cell Voltage S-Port Sensor
  (c) Pawelsky 20160123
  Not for commercial use
*/

#include "FrSkySportSensor.h"
#include "FrSkySportSensorFlvss.h"
#include "FrSkySportSingleWireSerial.h"
#include "FrSkySportTelemetry.h"
#include "SoftwareSerial.h"

FrSkySportSensorFlvss flvss;
FrSkySportTelemetry telemetry;

float cell1DividerMultiplier = (10000.0 + 3300.0) / 3300.0 * 1.1 / 1023.0;
float cell2DividerMultiplier = (10000.0 + 1500.0) / 1500.0 * 1.1 / 1023.0;
float cell3DividerMultiplier = (10000.0 +  910.0) /  910.0 * 1.1 / 1023.0;
float cell4DividerMultiplier = (10000.0 +  680.0) /  680.0 * 1.1 / 1023.0;
float cell5DividerMultiplier = (10000.0 +  510.0) /  510.0 * 1.1 / 1023.0;
float cell6DividerMultiplier = (10000.0 +  390.0) /  390.0 * 1.1 / 1023.0;

float cell1Voltage = 0.0;
float cell2Voltage = 0.0;
float cell3Voltage = 0.0;
float cell4Voltage = 0.0;
float cell5Voltage = 0.0;
float cell6Voltage = 0.0;

void setup()
{
  pinMode(A0, INPUT);
  pinMode(A1, INPUT);
  pinMode(A2, INPUT);
  pinMode(A3, INPUT);
  pinMode(A4, INPUT);
  pinMode(A5, INPUT);
  analogReference(INTERNAL);
  telemetry.begin(FrSkySportSingleWireSerial::SOFT_SERIAL_PIN_4, &flvss);
}

void loop()
{
  cell1Voltage = (float)analogRead(A5) * cell1DividerMultiplier;
  cell2Voltage = (float)analogRead(A4) * cell2DividerMultiplier;
  cell3Voltage = (float)analogRead(A3) * cell3DividerMultiplier;
  cell4Voltage = (float)analogRead(A2) * cell4DividerMultiplier;
  cell5Voltage = (float)analogRead(A0) * cell5DividerMultiplier;
  cell6Voltage = (float)analogRead(A1) * cell6DividerMultiplier;
  flvss.setData(cell1Voltage, cell2Voltage - cell1Voltage, cell3Voltage - cell2Voltage,
                cell4Voltage - cell3Voltage, cell5Voltage - cell4Voltage, cell6Voltage - cell5Voltage);
  telemetry.send();
}

This shield is meant for hobbyists and DIYers only. It has not been tested and there are no guarantees it will work. You can download the design file, modify it to your needs and build the board for yourself but you always use it at your own risk!

Not for commercial use!

Piezo activated LED’s for Arduino Nano

ESP8266 RGB+W Controller

Item Qty Reference Manufacturer Description Manufacturer Part Number 1 6 C3 C7 C10 C12-14 Yageo Capacitor: Ceramic, 0.1uF, ±10%, 16V, X7R, 0603 CC0603KRX7R7BB104 2 2 C2 C5 Murata Capacitor: Ceramic, 10nF, ±10%, 100V, X7R, 0603 GCM188R72A103KA37D 3 2 C6 C9 Yageo Capacitor: Ceramic, 10uF, ±10%, 16V, 0603 CC0603KRX5R7BB106 4 2 C4 C11 Yageo Capacitor: Ceramic, 1.0uF, ±10%, 16V, 0603 CC0603KRX5R7BB105 5 1 C8 Murata Capacitor: Ceramic, 0.47uF,10%, 10V, 0603,X5R GRM188R61A474KT 6 1 C1 Taiyo Yuden Capacitor: Ceramic, 1uF,100V, X5R, 1206 HMK316BJ105ML-T 7 1 D7 ON Semiconductor Switching Diode, SOD-123, SMT, MMSD4148 MMSD4148T1G 8 1 D1 Diodes Inc Diode, Schottky Barrier Rectifier, 0.5A, 100V SOD-123, SMT MBR0580S1-7 9 1 D2 On Semiconductor Zener Diode: 12V, SOD-323 MM3Z12VT1G 10 2 L1-2 Murata Inductor, Ferrite Bead, 0603, 600R BLM18TG601TN1D 11 2 J6 J8 Sullins Connector, Header: 1x4, 2.54mm pitch, Through hole, Straight
12 1 U2 TI DUAL,LOW POWER OP AMP, SO8 LM358 13 1 L3 Bourns Power inductor: 680uH, 200mA SRR7045-681M 14 1 J7 Sullins Header, receptacle, for LCD, 14 pin SMT NPTC072KFMS-RC 15 1 Q3 Foshan Blue Rocket Electronics Co., Ltd. N-Channel Enhancement MOSFET, SOT-23 2N7002K1 16 2 Q1-2 TI MOSFET N-CH 80V 100A VSON
17 1 Q4 Diodes Inc. MOSFET: P, 100V, 4R, SOT23 DMP10H4D2S-7 18 3 R4 R6 R10 Yageo Chip Resistor: 100K, +/-5%, 1/10W, 0603 RC0603JR-07100KL 19 5 R7 R9 R11-13 Yageo Chip Resistor: 10K, +/-5%, 1/10W, 0603 RC0603JR-0710KL 20 1 R5 ROHM Chip Resistor: 200K, 5%, 1/10W, 0603 MCR03EZ**J204 21 1 R17 Yageo Chip Resistor: 2.2 ohm, ±5%,1/10W, 0603 RC0603JR-072R2L 22 3 R2-3 R14 Rohm Chip Resistor: 330 Ohm, 5%, 1/10W, 0603 MCR03EZHJ331 23 1 R8 Yageo Chip Resistor: 33K, +/-5%, 1/10W, 0603
24 2 R18-19 ROHM Chip Resistor: 470K, ±5%, 1/10W, 0603 MCR03EZHJ-474 25 2 R15-16 ROHM Chip Resistor:47K, 5%, 1/10W, 0603 MCR03EZHJ473 26 1 R1 Panasonic Chip Resistor: 5mOhm, 1%, 3W, 2512 ERJ-MP4QF5M0U 27 1 S1 Omron Tact Switch: Push button, Top Actuated, SPST, N.O., 3.0x2.5mm, SMT B3U-1000P 28 1 U1 TI Micro, TSSOP28 MSP430I2020 29 1 U3 TI IC, Regulator, Buck, 100V, 350mA, VSSOP8 LM5008MM

v0.5 changes the tant cap pads.

V0.3 adds a UART header (also be used for a reset pin for homie)

Designed as a small daughter board for an ESP-01 to control a led strip, includes space for a 1000uf cap for the lights.

See https://github.com/takigama/HomeAutomationExperiments

Big cap goes on the underside of the board the power/control pins can either go up or down, but if they go up, must be angled.

Theres a BOM in the github for the components.

msp430_tmp_snsr

USB Stepper Motor Driver Manual

Breakout board for the LMT70/A CMOS analog temperature sensor from Texas Instruments

https://github.com/CalvEngIO/LMT70-Breakout