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ADS1299-BioAmp

wangq22·ADS1299-BioAmp

ADS1299-BioAmp PCB layout, top view — open source ESP32 board by wangq22

About the ADS1299-BioAmp PCB

ADS1299-BioAmp is an open source ESP32 PCB design by wangq22, published on GitHub. It is a 2-layer board measuring 74.5 × 49 mm, with 76 components from 43 distinct parts.

Its main chip is the ESP32-C3-WROOM-02, from the ESP32 family. Other key parts include the ADS1299IPAG, LT1762-3.3, TPD2E2U06DRL, TPD2E2U06DCK and AP9101CK. By type, the board carries 38 capacitors, 22 resistors, 9 ICs, 3 connectors, 1 transistor and 1 battery holder.

It belongs with the iot & wireless and power & battery designs in this gallery.

From the project

ADS1299 BioAmp is an 8-channel biopotential acquisition board designed for research and development of EEG, EMG, ECG, and other low-amplitude bioelectrical signals.

ADS1299 BioAmp is an 8-channel biopotential acquisition board designed for research and development of EEG, EMG, ECG, and other low-amplitude bioelectrical signals.

The board integrates the Texas Instruments ADS1299 analog front-end with an ESP32-C3 wireless MCU, providing high-resolution signal acquisition together with Bluetooth Low Energy (BLE) and USB connectivity.

ADS1299-BioAmp, from the project README
From the project README

Main components on the ADS1299-BioAmp

ADS1299IPAGESP32-C3-WROOM-02LT1762-3.3TPD2E2U06DRLTPD2E2U06DCKAP9101CKTP4056-42-ESOP8MP3424AGG-ZLT1762-5

ADS1299-BioAmp bill of materials (BOM)

76 components, 43 distinct parts.

QtyPartRefs
1
ADS1299IPAG
U1
1
ESP32-C3-WROOM-02
U2
1
LT1762-3.3
U3
1
TPD2E2U06DRL
U4
1
TPD2E2U06DCK
U5
1
AP9101CK
U6
1
TP4056-42-ESOP8
U7
1
MP3424AGG-Z
U8
1
LT1762-5
U9
1
FS8205A
Q2
1
Conn_01x16_Pin
J1
1
Reference_Electrode(earlobe)
J2
1
USB_C_Receptacle_USB2.0_14P
J3
1
Battery_Cell
BT1
1
LED_ARGB
D1
1
1.5 µH
L1
1
100uF
C1
13
1uF
C2, C3, C5, C6, C8, C10, C12, C14 +5
1
0.1uf
C4
10
100nF
C7, C9, C11, C13, C15, C17, C19, C21 +2
Show 23 more
QtyPartRefs
1
10uF
C23
2
22 uF
C24, C25
1
10nF
C26
1
1µF
C27
2
22µF
C28, C29
2
0.01μF
C31, C34
2
10μF
C32, C35
1
10µF
C36
1
1.5nF
C38
8
10k
R1, R2, R3, R4, R5, R6, R11, R21
1
330
R7
1
2.7k
R8
2
1k
R9, R10
1
0
R12
1
100k
R13
1
2kΩ
R14
1
100kΩ
R15
1
16mΩ
R16
1
18mΩ
R17
1
750kΩ
R18
1
128kΩ
R19
1
1MΩ
R20
1
100Ω
R22

ADS1299-BioAmp design files

The KiCad project lives in the wangq22/ADS1299-BioAmp repository on GitHub; these links point at the commit this page was built from.

ADS1299-BioAmp: common questions

What microcontroller does the ADS1299-BioAmp use?

The ADS1299-BioAmp is built around the ESP32-C3-WROOM-02, from the ESP32 family.

How big is the ADS1299-BioAmp PCB?

The ADS1299-BioAmp measures 74.5 × 49 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ADS1299-BioAmp?

76 components, from 43 distinct parts. The full bill of materials is listed on this page.

Where can I download the ADS1299-BioAmp design files?

From the wangq22/ADS1299-BioAmp repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the ADS1299-BioAmp design in my own project?

The repository has no license, so all rights stay with wangq22. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the ADS1299-BioAmp without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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