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Low-Cost-Insulin-Pump-V2.1

mattgp32·Low-Cost-Insulin-Pump-V2.1·PCB Schematic and Layout/PumpV2schematic.kicad_pcb

Low-Cost-Insulin-Pump-V2.1 PCB layout, top view — open source ESP32 board by mattgp32

About the Low-Cost-Insulin-Pump-V2.1 PCB

Low-Cost-Insulin-Pump-V2.1 is an open source ESP32 PCB design by mattgp32, published on GitHub. It is a 4-layer board measuring 32 × 45 mm, with 82 components from 46 distinct parts.

Its main chip is the ESP32-S3-WROOM-1-N16R2, from the ESP32 family. Other key parts include the RCLAMP1624T.TCT, DRV8846RGET, MCP16414T-IMN and MCP73831-2-OT. By type, the board carries 28 capacitors, 27 resistors, 7 connectors, 6 ICs, 6 diodes and 3 switches.

It belongs with the iot & wireless and robotics & motion designs in this gallery.

From the project

A repository to store all the software files used for the BT Insulin Pump

This Git repository represents the final result of multiple design iterations of a low-cost insulin pump I have designed as part of my studies in medical device development. The repository contains files for hardware, both electrical and mechanical, and firmware. I have also included a BOM to make ordering of components easier if anyone wishes to replicate this design. The device has been tested in humans, in a small clinical trial, and a write-up of the results was published here.

Low-Cost-Insulin-Pump-V2.1, from the project README
From the project README

Main components on the Low-Cost-Insulin-Pump-V2.1

ESP32-S3-WROOM-1-N16R2RCLAMP1624T.TCTDRV8846RGETMCP16414T-IMNMCP73831-2-OT

Low-Cost-Insulin-Pump-V2.1 bill of materials (BOM)

82 components, 46 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3-WROOM-1-N16R2
U1
1
RCLAMP1624T.TCT
U2
1
DRV8846RGET
U3
1
~
U4
1
MCP16414T-IMN
U5
1
MCP73831-2-OT
U6
1
MMBT2222A
Q2
1
FC-135_32.7680KA-A0
Y1
1
Pot Connect
J1
1
GND TEST POINT
J3
1
GCT USB4085
J4
1
Molex
J5
1
CONN_01X02
Conn_01x02
J6
2
Thermistor
J8, J9
1
Buzzer
BZ1
1
RESET
SW1
1
BOOT
SW2
1
WIFI
SW3
1
SD103AWS
D1
1
LED Green
D2
Show 26 more
QtyPartRefs
1
LED Red
D3
3
LED Blue
D5, D6, D7
1
Ferrite Bead
FB1
1
4.7 uH
L1
1
22U
22u
C1
5
1UF
1uF
C2, C4, C5, C13, C19
6
100NF
100nF
C3, C9, C12, C20, C21, C22
2
12PF
12pF
C6, C7
1
2.2UF
2.2uF
C8
5
10UF
10uF
C10, C14, C15, C16, C24
2
100UF
100uF
C11, C28
2
4.7UF
4.7uF
C17, C18
1
1uF
C23
3
10NF
10nF
C25, C26, C27
10
10K
R1, R2, R8, R9, R10, R13, R21, R22 +2
1
180R
R3
2
TBD
R4, R5
2
5.11K
5.11k
R6, R7
2
500M
500m
R11, R12
1
130R
R16
1
1.43M
R17
1
360K
360k
R18
1
150R
R19
1
5K6
R20
2
100K
R24, R25
3
50R
R26, R27, R28

Low-Cost-Insulin-Pump-V2.1 design files

The KiCad project lives in the mattgp32/Low-Cost-Insulin-Pump-V2.1 repository on GitHub; these links point at the commit this page was built from.

Low-Cost-Insulin-Pump-V2.1: common questions

What microcontroller does the Low-Cost-Insulin-Pump-V2.1 use?

The Low-Cost-Insulin-Pump-V2.1 is built around the ESP32-S3-WROOM-1-N16R2, from the ESP32 family.

How big is the Low-Cost-Insulin-Pump-V2.1 PCB?

The Low-Cost-Insulin-Pump-V2.1 measures 32 × 45 mm, has 4 copper layers and is 4.69 mm thick.

How many components are on the Low-Cost-Insulin-Pump-V2.1?

82 components, from 46 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Low-Cost-Insulin-Pump-V2.1 design files?

From the mattgp32/Low-Cost-Insulin-Pump-V2.1 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Low-Cost-Insulin-Pump-V2.1 design in my own project?

The repository has no license, so all rights stay with mattgp32. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Low-Cost-Insulin-Pump-V2.1 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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