# Mwangi Alex Wanjiru **Handle:** @moshtey ## Bio We will know, we must know! ## Stats - **Projects:** 3 - **Components:** 11 - **Followers:** 6 - **Following:** 1 ## More - [Starred Projects](https://www.flux.ai/moshtey/starred.md) ## Projects (Page 1 of 1, 12 total) - [semgdaq ](https://www.flux.ai/moshtey/semgdaq.md) - The semgdaq board is a wearable 6 channel data acquisition unit for capturing surface electromyographic (sEMG) signals from human arm muscles using SJ2-3593D jack connectors while conditioning, digitizing, processing and feature extracting them then transmitting the feature data as vectors to an external AI accelerated board through an SM12B-SRSS IDC connector using 12C and UART communication protocals where AI models are run for various applications including robotic control, muscle signals medical assessment and gesture recognition. The feature vectors are comprised of onset detection, slope sign changes, autoregression coefficients and Short Time Fourier Transform magnitude spectrum data for each segment or window of the signals in real time. This vectors can be used as the basis for further feature extraction on more computationally resourceful hardware where machine learning algorthms can be employed for descision making in the applications mentioned earlier. The board leverages INA125P instrumentation amplifiers together with filter stages utilizing LM324QT op-amps for conditioning and an STM32G4A1VET6 microcontroller for the digitization, processing, feature extraction and data transmission. Since AI models can only be as good as the data, the design of such a DAQ is necessary to ensure clean, reliable and real-time data for AI applications requiring sEMG feature data. The board also has USB-FS and JTAG to cater for debugging and external flash memory to extend its data storage and processing capability. The power (5V) is fed through a screw terminal and is regulated by two LDK320AM LDO regulators to offer 5V, 3.3V and 1.8V to meet the requirements of various components on the board. - [sEMG_DAQ](https://www.flux.ai/moshtey/semgdaq.md) - sEMG-DAQ is a wearable 6 channel data acquisition unit for capturing surface electromyographic (sEMG) signals from human arm muscles using SJ2-3593D jack connectors while conditioning, digitizing, processing and transmitting them as sEMG data to an external AI accelerated board through an SM12B-SRSS IDC connector where AI models are run for various applications including robotic control, muscle signals medical assessment and gesture recognition. The board leverages an INA125P instrumentation amplifier together with filter stages utilizing LM324QT op-amps for conditioning and an STM32G4A1VET6 microcontroller for the digitization, processing and data transmission of the signals. Since AI models can only be as good as the data, the design of such a DAQ is necessary to ensure clean, reliable and real-time data for AI applications requiring sEMG data. The board also has USB-FS and JTAG to cater for debugging. The power (5V) is fed through a screw terminal and is regulated by two LDK320AM LDO regulators to offer 5V, 3.3V and 1.8V to meet the requirements of various components on the board. - [Audio DSP Board](https://www.flux.ai/moshtey/audio-dsp-board.md) - A DSP board capable of performing real time audio signal processing. - [SM12B-SRSS-TBLFSN](https://www.flux.ai/moshtey/sm12b-srss-tblfsn.md) - 12pin IDC CONN_SM12B-SRSS-TBLFSN_JST, Surface mount ~right angle body orientation - [USB4800-03-A](https://www.flux.ai/moshtey/usb4800-03-a.md) - USB480003A https://gct.co/connector/usb4800 USB Connectors USB2.0 Type C Rcpt, SMT, Hrz, 3.5mm elevated, 16 Pin 5.58 640-USB4800-03-A https://www.mouser.co.uk/ProductDetail/GCT/USB4800-03-A?qs=vvQtp7zwQdMkfG8vViEZoQ%3D%3D GCT (GLOBAL CONNECTOR TECHNOLOGY) USB4800-03-A - [2340901-1](https://www.flux.ai/moshtey/2340901-1.md) - 23409011 USB Connectors USB Type C 2.0 Conn Rec Mid-Mount One Ro https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F2340901%7FA%7Fpdf%7FEnglish%7FENG_CD_2340901_A.pdf%7F2340901-1 USB Type C 2.0 Conn Rec Mid-Mount One Ro 3.36 TE Connectivity 2340901-1 571-2340901-1 https://www.mouser.co.uk/ProductDetail/TE-Connectivity/2340901-1?qs=eP2BKZSCXI7BSVkMMiSx2A%3D%3D 2340901-1 https://www.arrow.com/en/products/2340901-1/te-connectivity?region=nac - [SJ2-3593D-SMT-TR](https://www.flux.ai/moshtey/sj2-3593d-smt-tr.md) - SJ23593DSMTTR Phone Connectors 3.5mm Audio Jack SMT 3cond Tip/Ring swtch 5.1 490-SJ2-3593D-SMT-TR https://www.mouser.co.uk/ProductDetail/CUI-Devices/SJ2-3593D-SMT-TR?qs=DXv0QSHKF4wWj2AnIqZJhQ%3D%3D CUI Devices SJ2-3593D-SMT-TR - [ICS-316-T](https://www.flux.ai/moshtey/ics-316-t.md) - ICS316T 16 pin socket connector https://app.adam-tech.com/products/download/data_sheet/199582/ics-3xx-t-data-sheet.pdf 16 (2 x 8) Pos DIP, 0.3\" (7.62mm) Row Spacing Socket Tin Through Hole 5.4864 Adam Tech ICS-316-T - [STM32G4A1VET6](https://www.flux.ai/moshtey/stm32g4a1vet6.md) - ARM Microcontrollers - MCU Mainstream Arm Cortex-M4 MCU 170 MHz 512 Kbytes Flash 1.6 STMicroelectronics STM32G4A1VET6 QFP50P1600X1600X160-100N https://www.st.com/resource/en/datasheet/stm32g4a1ve.pdf - [LM324QT](https://www.flux.ai/moshtey/lm324qt.md) - STMicroelectronics LM324QT QFN50P300X300X100-17N http://uk.rs-online.com/web/p/products/2396305P Operational Amplifiers - Op Amps Low Power QUAD 1.3 MHz 100dB 1 2396305P http://uk.rs-online.com/web/p/products/2396305P - [LDK320AM-R](https://www.flux.ai/moshtey/ldk320am-r.md) - SOT95P280X145-5N LDO Voltage Regulators 200 mA low quiescent current and high PSRR voltage regulator 1.45 - https://componentsearchengine.com/Datasheets/1/LDK320AM-R.pdf 511-LDK320AM-R https://www.mouser.co.uk/ProductDetail/STMicroelectronics/LDK320AM-R?qs=iR2ablhfrmEQVY8ESb5QMg%3D%3D STMicroelectronics LDK320AM-R - [SMLP14ECNWT86](https://www.flux.ai/moshtey/smlp14ecnwt86.md) - SMLP14ECNWT86 Standard LEDs - SMD LED GREEN 0603 HIGH BRIGHTNESS 0.25 ROHM Semiconductor SMLP14ECNWT86 ## Pages - Pages: **1** --- *Generated from [https://www.flux.ai/moshtey](https://www.flux.ai/moshtey)*